You had a post earlier this year regarding your 2005 trailer, and were wondering what replacement caps to get. Based on your post it sounds like you had the 1.98" press fit Reliable oil filled hubs. I have a 2004 with the same system. I haven't had any major issues but I know I'll be screwed if something goes wrong because you can't get any of these parts anymore. Were you ever able to find replacements?